Last seen: Aug 25, 2025
... but a volumiser would prolong run times by the same amount without any of the downside risk in performance, difficulties with fault diagnosis and ...
This is indeed welcome news. In addition the new legislation: Increases the maximum volume under pd to 1.5cu m other than for flats where it remai...
That's my point really, it should be both freely and readily available. As you say it's just a table (or set of graphs) of cop and output vs ft and o...
Good luck, I hope it all works out!
In fairness to heat pump manufacturers the output inevitably (unless artificially restricted in software) varies with oat and FT. Furthermore the vari...
Thanks for the detailed reply and I apologise if I can sometimes be pedantic and determined to 'get to the bottom' of product claims. My aim is simply...
Really delighted to hear that. I can't comment on homely but if you don't have it then you will likely want to readjust your weather compensation cur...
Work on 2-3 percent per degree. This is a reasonable estimate of the reduction in COP because you will need to run the heat pump at a higher tempera...
The useful bit is the bit that specifies the heat loss at the design temp ( presumably around -3). It's your choice of course but I genuinely fear t...
@harryrea In a heat pump only system you are never heating space and DHW simultaneously because they require different flow temperatures. For the sam...
Ok so I think you consider it (structural zoning, not hybrids) mainstream. Fair enough. Let's consider a couple of fairly mainstream examples. a) ...
Latest Posts
-
RE: Octopus replacing the fixed 15p/kWh export rate with a market tracking one
@old_scientist Thank you, that makes sense and I've re-...
By TRBob , 30 seconds ago
-
RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
The Ultimate Guide to Heat Pumps is less than a month a...
By Mars , 32 minutes ago
-
RE: Rodents! A word of warning for heat pump owners
@tim441 Or as they didn’t quite say in the space travel...
By Toodles , 6 hours ago
-
RE: Mitsu Wireless Controller and MelCloud
Update: I have found that the contractor had changed on...
By DavidAlgarve , 18 hours ago
-
RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor Hi Mars, We have just installed a Grant Aerona...
By GrahamF , 18 hours ago
-
RE: Sanity check please. Battery storage and inverter sizing.
There are MCS guidelines about how close to the edge/ri...
By Old_Scientist , 21 hours ago
-
RE: Balancing financial efficiency and comfort using the Octopus Cosy tariff
I estimated our usage on the following basis. The mos...
By Old_Scientist , 23 hours ago
-
RE: Why so many sigenergi installer recommendations?
It’s a really simple answer, GivEnergy. Installers ...
By SAEnergy , 1 day ago
-
@editor Something changed in this last 12 months, they ...
By ASHP-BOBBA , 2 days ago
-
RE: Ecodan & MelCloud scheduling
I put the above question to Mitsu UK at the sme time as...
By DavidAlgarve , 2 days ago
-
Thanks for the heat geek info. I've fitted my own heat ...
By bontwoody , 3 days ago
-
RE: Does anyone have experience of a smart water meter?
Just to give a sense of scale, I've used the CCW water ...
By Majordennisbloodnok , 3 days ago
-
RE: Powerwall 3 or Myenergi or something else?
We have a Tesla Powerwall 3, recently installed, so I m...
By Old_Scientist , 4 days ago
-
RE: Mitsubishi PAR-WT60R-E Wireless Controller installation
@morgan They have been paired once but it was thought b...
By DavidAlgarve , 5 days ago
-
RE: Isolating the system for a planned power cut
A great many ground-mounted local substation transforme...
By Transparent , 5 days ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Having bit the bullet and paid £250 for a service, our ...
By Old_Scientist , 6 days ago
-
New heat pump heating system underperforming in Italy... Advice needed!
hi all, first post! I've just renovated a house in sout...
By robinlawrie , 6 days ago
-
RE: Anyone still weathering it out with Agile?
I went to Agile when I had solar installed July last ye...
By NJT , 7 days ago
-
RE: Say hello and introduce yourself
Whilst you're busy installing services (pipes and wires...
By Transparent , 1 week ago
-
RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
@editor I know it was formally announced at Ish the oth...
By PatrickVito , 1 week ago
